*{
    margin:0;
    padding:0;
    list-style:none;
    // 横向全屏效果
    header{
            width: 100%;
            height:40px;
            background-color:rgb(51,51,51);
            // 版心
        .nav{
                width: 1226px;
                height:40px;
                margin:0 auto;
            .nav-left{
                width: 700px;
                height:40px;
                float:left;
                // nav-left
                .ul-left{
                    height:40px;
                    display:flex;
                    justify-content:space-around;
                    align-items:center;
                    font-size:12px;
                    color:#b0b0b0;
                    li{
                        height:40px;
                        text-align:center;
                        line-height:40px;
                        cursor:pointer;
                        &:hover{
                            color:white;
                        }
                    }
                    span{
                        margin-left:10px;
                        color:#424242;
                    }
                }
            }
            .nav-right{
                width: 343px;
                height:40px;
                float:right;
                ul{
                    height:40px;
                    display:flex;
                    justify-content:space-around;
                    align-items:center;
                    color:#b0b0b0;
                    font-size:12px;
                    li{
                        height:40px;
                        line-height:40px;
                        text-align:center;
                        cursor:pointer;
                        &:last-child{
                            width: 100px;
                            &:hover{
                                color:rgb(255,106,0);
                                background-color:white;
                            }
                        }
                        &:hover{
                            color:white;
                        }
                    }
                }
            }
        }
    }
}